Re: [PATCH V8 0/4] soc: imx: add i.MX BLK-CTL support

From: Frieder Schrempf <frieder.schrempf@kontron.de>
To: Marek Vasut <marex@denx.de>, Adam Ford <aford173@gmail.com>,
	"Peng Fan (OSS)" <peng.fan@oss.nxp.com>
Cc: "Rob Herring" <robh+dt@kernel.org>,
	"Shawn Guo" <shawnguo@kernel.org>,
	"Sascha Hauer" <s.hauer@pengutronix.de>,
	"Sascha Hauer" <kernel@pengutronix.de>,
	"Fabio Estevam" <festevam@gmail.com>,
	dl-linux-imx <linux-imx@nxp.com>,
	"Philipp Zabel" <p.zabel@pengutronix.de>,
	"Lucas Stach" <l.stach@pengutronix.de>,
	"Krzysztof Kozlowski" <krzk@kernel.org>,
	"Guido Günther" <agx@sigxcpu.org>,
	"Andrey Smirnov" <andrew.smirnov@gmail.com>,
	devicetree <devicetree@vger.kernel.org>,
	arm-soc <linux-arm-kernel@lists.infradead.org>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	"Jacky Bai" <ping.bai@nxp.com>, "Abel Vesa" <abel.vesa@nxp.com>,
	"Jagan Teki" <jagan@amarulasolutions.com>
Subject: Re: [PATCH V8 0/4] soc: imx: add i.MX BLK-CTL support
Date: Thu, 1 Jul 2021 09:32:34 +0200	[thread overview]
Message-ID: <a760483d-4607-1e48-6695-df64b3c4bbf2@kontron.de> (raw)
In-Reply-To: <fc7fd710-a834-8273-62e7-6a151de03036@kontron.de>

On 30.06.21 19:20, Frieder Schrempf wrote:
> On 30.06.21 18:28, Marek Vasut wrote:
>> On 6/30/21 4:46 PM, Frieder Schrempf wrote:
>>> On 30.06.21 14:09, Adam Ford wrote:
>>>> On Wed, Jun 30, 2021 at 4:34 AM Peng Fan (OSS) <peng.fan@oss.nxp.com> wrote:
>>>>>
>>>>>> Subject: Re: [PATCH V8 0/4] soc: imx: add i.MX BLK-CTL support
>>>>>>
>>>>>> On Tue, Jun 29, 2021 at 1:56 AM Peng Fan (OSS) <peng.fan@oss.nxp.com>
>>>>>> wrote:
>>>>>>>
>>>>>>> From: Peng Fan <peng.fan@nxp.com>
>>>>>>>
>>>>>>> V8:
>>>>>>> Revert one change in v7, force goto disable_clk for handshake when
>>>>>>> power on in patch 3 One minor update to use if{} else {}, not if{};
>>>>>>> if{}; in patch 3 Typo Hankshake->Handshake
>>>>>>>
>>>>>> I am using ATF, branch lf_v2.4, from the NXP code aurora repo with U-Boot
>>>>>> v2021.07-rc5
>>>>>>
>>>>>> I applied this patch against linux-next, I applied the pgc patches [1], and the
>>>>>> suggested power-domains to the otg1 and otg2 nodes.
>>>>>> I am able to boot the device and use USB, but with this applied, I cannot wake
>>>>>> from sleep.  If I revert this, the system wakes from sleep again.
>>>>>
>>>>> I just tried linux-next without this patch on iMX8MM EVK, suspend/resume
>>>>> not work. Per my last test, it works before. Not sure what changed in kernel.
>>>>>
>>>>> Which kernel are you using, any commit or git repo? I could try on imx8mm
>>>>> evk and debug the issue you see.
>>>>
>>>> I used kernel-next,
>>>> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>>>> commit 889bab4c367a0ef58208fd80fafa74bb6e2dca26 (tag: next-20210621)
>>>>
>>>> I then applied the GPCv2 patch that Marek sent.  You were CC'd on the
>>>> e-mail from Marek, but I can forward the patch to you if you can't
>>>> find it.
>>>> I tested his patch and I was able to suspend-to-RAM and resume.
>>>> Once I was comfortable that it worked, I then applied your patch
>>>> series for the blk-ctl.
>>>> With the blk-ctl series applied, the suspend-resume stopped working.
>>>
>>> Same here. I tested with linux-next-20210629 and as soon as I add the BLK-CTL driver and devicetree nodes, the resume after suspend causes a lockup each time.
>>
>> btw do you have etnaviv enabled ?
> 
> yes, but I can try without and see if it's related.

It looks like the issue is not GPU-related. It appears once I add the pgc_dispmix, pgc_mipi and dispmix_blk_ctl nodes to the dt (even without any users, so lcdif and dsim are disabled). Once I remove the three nodes the issue is gone.